Panic has spread with the discovery of a bacterium in the United States that is resistant to the last bastions of antibiotic resistance.

A quantum dot: A high-resolution transmission electron micrograph of cadmium telluride nanoparticles. (The scale bar in the lower right is 2 nanometers long, or two millionths of a millimeter.)
Nagpal Group, University of ColoradoMarch 21, 2016